Erett m



2 Sheets-Sheet 1.

(No Model.)

M. N. BRAY, E. M. POPE & A. H. TABER.

RIVET SETTING MACHINE.

Patent ed Nov. 25, 1890.

(No Model.)

2 Sheets-Sheet 2.

' M. N. BRAY, E. M. POPE & A. H. TABER.

RIVET SETTING MAOHINE.

Patented Nov. 25, 1890.

1'a1 10.1'q .s. 139.7.

Lweniors: Jl lbllcnfl/TBray, .EvereHzMlope, .Jllberbli'. Taber,

UNITED STATES ATENT OFFICE M ELLEN N. BRAY, OF BROOKLINE, AND EVERETT M. POPE AND ALBERT H. TABER, OF QUINCY, MASSACHUSETTS; SAID POPE AND TAHER ASSIGNORS TO SAID BRA'Y.

RlVET-SETTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 441,388, dated November 25, 1890.

Application filed June 27, 1890. Serial No. 356,923. (No model.)

To all whom it may concern/.-

lie it known that we, MELLEN N. BRAY, of Brookline, in the count-y of Norfolk, and EV- ERETT M. Porn and ALBERT II. 'IAB R, both of Quincy,in the county of Norfolk and State of lllassachusetts, have invented jointly new and useful Improvements in Rivet-Setting Machines, of which the following, taken in connection with the accompanying drawings,

[0 is a specification.

Our invention relates to rivet-setting machines; and ,it consists in certain novel features of construction, arrangement, and combination of parts, which will be readily un- .derstood by reference to the description of the drawings and to the claims hereinafter given, and in which our invention is clearly pointed out.

Figure 1 of the drawings is an elevation of the right-hand side of a machine embodying our invention. Fig. 2 is an elevation of the opposite side of the same. Fig. 3 is a section through the frame, operating-lever, and hop per on line 1 1 on Figs. 1 and 2. Fig. 4 is a 2 5 plan of the hopper and a portion of the raceway detached. Fig. 5 is a vertical section through the center line of the raceway, the hopper, the pocket, a portion of the gooseneck,-the bed, and anvil drawn to an enlarged scale. Fig. 6 is a transverse section of the raceway on line 2 .2 on Fig. 5. Fig. 7 is a section through a portion of the hopper on line 3 3 on Fig. 5. Fig. 8 is a plan of a portion of the raceway and a portion of the hopper-supporting stand. Fig. 9 is an elevation of the rear side of the pocket and portions of its supporting-springs. Fig. 10 is a sectional plan of the same, the cutting-plane being on line 4 4 on Fig. 9. Fig. 11 is a plan of the plate which forms the terminal or tip'of the raceway, and Fig. 12 is a front-end elevation of said plate.

In the drawings, Ais the bed or base of the machine, cast in one piece with the goose- 5 neck A.

' B is the setting-plunger, mounted in bearings in the front end of the goose-neck.

C is the operating-lover, connected to the plunger 15 by the link D, and having pivoted the raceway-bar b is secured by the screw 0,

to its opposite end the rod E, g which is connected to a treadle (not shown) secured to the floor, all in a well-known manner.

The anvil F, of ordinary construction, is mounted in the front end of the bedAin {axial line with the plunger B, in a well-known manner. To the right-hand side of the gooseneck A is firmly secured by the bolt a the circular stand G, to which the upper end of as shown in Figs. 1, 4., and 8.

The stand G consists of an annular ring (I, connected at its base to a perforated or skeleton web (1', and is provided at its center with the pendent hub (Z and with a flange or bracket (1 by which and the bolt a it is secured to the goose-neck A. The ring d has formed in its inner periphery an annular rabbet to form a seat or bearing for the base of the hopper II, and said ring is cut through at one side to form an opening to receive the upper end of the raceway-ba1'b,as shown in Figs. 4, 5, and 8. The inner wall of said ring below the rabbet is cut away at the right of the the lower end of raceway, as shown at d in Fig. 8, the purpose 7 5 of which will be presently explained.

The hopper II is made in the form of a cylindrical dish with a short central hub, in which is fixed the short shaft H, which has its bearing in the hub d of the stand G, and has secured to its lower end the miter gear wheel e, the teeth of which engage with and are acted upon by the teeth of the miter gearwheel f, firmly secured upon the horizontal shaft g, mounted in a bearing'in the gooseneck A, and having firmly secured thereon at the other side of said hearing from said miter-gear. the ratchet-wheel I.

The hopper II has formed in its bottom a series of radial slots h, which extend from near its central hub to its outer periphery, a portion of each of said slots, however, beingv covered by a bridge-plate h, which extends inward from the inner surface of the wall of said hopper and is arched, so as to permit the free passage of the rivet-heads beneath them, as shown in Figs. 4, 5, and 7. Thehopper II also has formed therein a series of vcrtical and radial ribs or plates b extending inward from the wall of said hopper, to form pockets 'or recesses, into which the rivets fall at the lowestside of said hopper, and as the hopper is revolved said rivets are carried to the upper side of the hopper, when they roll therefrom toward its lower side, and during their downward movement more or less of them fall into one or another of the slots h, where they hang by their heads.

The stand G is mounted on the goose-neck in such a position that the bottom of the hopper H is. inclined toward the rivet-receiving pocket at an angle of about thirty degrees from a horizontal line, as shown.

The shaft 9 has loosely mounted thereon in near proximity to the ratchet-wheel I the lever-arm J, which has pivoted to its free end one end of the link or red K, the opposite end of which is connected to the stud z, adjustably secured in the slot j, formed in the operatinglever C, as shown. Between the ratchet-wheel I and the arm J- is placed on the shaft 9 a washer 7c, of leather or other suitable frietional material, against which the arm J is pressed by the coiled spring I, surrounding the shaft 9 between said arm and the screw .collars or nuts m n, fitted on the end of said shaft and adjustable thereon, to vary the tension of said spring, as may be desired.

A spring dog or stop 0 is secured to the bed A by one end in such a position that its-free end shall engage with the teeth of the ratchetwheel I, as shown in Fig. 2.

The plunger B has mounted in its lower end the setting-tool p, and also has fitted to its outer surface the hub or block L in such a manner that it moves with said plunger during a portion of the stroke of said plunger in either direction, and then remains in a state of rest while saidplunger completes its stroke. The block L has formed in its front side the slot q, into which the stop set-screw q, set in the plunger B, projects to serve as a stop to limit the movement of the plunger within said block. The block L is made to move with the plunger B by friction .of the washer 1', made preferably of rawhide or other extra frictional material, which is pressed hard against said plunger by the spring 1', interposed between the metal follower r and the set-screw 'r", set in the rear of said block, as shown in Figs. 1 and 5. f

To the block L is secured two pendent springsss, to the lower ends of which are secured the two jaws of the rivet-receiving pocket s s',-of well-known construction, except that the rear inner upper corner of each aw is slightly rounded, as shown in Figs. 9

and 10, to prevent said corners catching upon the end of arivet, so as to block the machine when said pocket is moved upward, even though the jaws are closed when they are moved upward.

The raceway, composed of the bar b, having formed therein the T-shaped groove b, and the thin cap-plates b is secured at one end to the hopper-supporting standG, as before described, and its lower end is supported'hy the rod or plate b secured thereto at its lower end, and at its upper and t0 the gooseneck A at b, as "shown in Figs. 1 and 2. The

lower. end of the bar b is cut oblique,-so that when in position in the machine its under surface shall be horizontal or at right angles to the axis of the reciprocating setting-plunger the setting-tool 19, so that only one rivet can be delivered from its end at the same time, and the pocket-blocks s s extend under the said plate 15 sufliciently far to reachbeyond the center of the shank of a rivet hanging I from the end of said plate, so that when said pocket is raised with its two jaws separated by the' setting-tool p, which has just been forced between them in the act of set-' ting a rivet, and the blockL comes in contact with the lower end of the plunger bearing in the goose-neck and the upward motion of the pocket is arrested, while the plunger continues to move upward till the tool 1), is withdrawn from between the two halves of the pocket, the inclined inner surfaces u of said pocket will engage the shank of the rivet hanging from the end of the plate t at the rear of its center and force it into the pocket in axial line with the setting-plunger and anvil.

The number of teeth in the wheelI corresponds to the number of radial slots in the bottom of the hopper H.

The operation of our invention is as fol-v lows: The rivets are placed in the hopper H in bulk, and the treadle is operated until a rivet is depdsited in the pocket before any work to be riveted is placed on the anvil. When the operator depresses the treadle, the long arm of the operating-lever O is raised, the plunger B, the setting-tool p, and pocket are depressed, and the arm J is moved about the axis of the shaft gin the direction indicated by the arrow '0 on Fig. 2; but as the springdog or stop 0 is in engagement with a tooth of the wheel I, said wheel and the shaft g, and consequently the hopper H, remain in a state of rest, the hub of the'arm J slipping on. the frictional washer is; but when the foot is removed from the treadle, the long arm of the lever O and the arm J are moved in the opposite direction, the setting-plunger and the pocket are moved upward, and as the friction between the arm J and the wheel I is greater than the resistance to the revolution of the shaftgand hopper H, unless blocked bythe rivets getting jammed at the junction of the hopper with the chute or raceway, the hopper will be rotated one step about its axis and bring another radial slot it into line with the raceway b. As the hopper H is intermittently rotated about its axis, the rivets, which naturally fall to the lowest side of the hopper, are carried around toward the upper side of the hopper by the radial ribs or plates 7L2 until the force of gravity acting thereon causes them to roll across the hopper-bottom toward its lower side again, in doing which more or less of them will fallinto one or another of the slots h, so as to be suspended thereinby theirheads. When a slot h is brought in line with the raceway b, the rivets in said slot, if not clogged will slide down said raceway,if empty, tillthe lower rivet-head comes in contact with the setting-tool, where their motion is arrested until the setting-tool is moved upward when the end rivet is free to be moved from the end of the plate 1? by the pressure of the column or line of rivets in the inclined raceway above it and caused to fall into the pocket beneath the setting-tool. If the pressure of the line of rivets is not sufficient to push the end rivet into the pocket, the closing of the two halves of said pocket when the setting-tool is withdrawn from between them, acting upon the shank of said end rivet by their inclined inner surface, forces said rivet into the center of the pocket, while at the'same time the rear side of the pocket prevents the other rivets being moved forward until the pocket descends with the setting-plunger into contact with the material in which the rivet is to be set.

By the use of the hopper H, constructed and operating as described, a constant and sure supply of rivets to the raceway is assured because of the large number of slots in which they may become arranged in position to be discharged into the raceway. At each movement of the hopper about its axis all the rivets remaining in the slot h-that is, in line with the raceway-wil1 be moved backward by the incline surface (1 of the inner surface of the ring (I of the stand G, so that they shall present no obstruction to the free rotation of the hopper. The arrangement of the mechanism for operating the hopper is such that if the rivets get jammed or clogged in such a way as to obstruct the rotation of the hopper no harm will be done, as the arm J will move about the shaft g'without rotating it, and the machine will continue to operate till all of the rivets in the raceway are used; but before that time arrives the operator will have removed the obstruction and the hopper will again supply rivets to the raceway.

The wheel I may be a plane disk to give the desired surface for the leather washer is to act against, and the base of the hopper may have a series of teeth formed thereon to co-operate with the spring-stop 0, which may be secured to the stand G, all as shown in dotted lines in Fig. 4, without in any sense affecting the principles of our invention.

We are aware that rivet-receivin g pockets made in two parts pressed together by springs and mounted upon and movable with the setting-plunger during a portion of its stroke have been used before and that the same has been used in combination wit-h an inclined chute or raceway; but the raceway was attached to and movable vertically with said pocket, and hence we do not claim, broadly, a pocket made in two yielding parts or a pocket arranged to be moved with the setting-plunger during aportion of its stroke and then to remain in a state of rest until said plunger has finished, or the same in combination with an inclined raceway attached to and movable with said pocket or its supportingblock.

We claim- 1. In a rivet-setting machine, the hopper 11, provided in its bottom with a series of radial slots 71 h, extending'to its outer periphery, with the bridge-plates h and the radial ribs or plates h projecting inward from its circular wall, substantially as shown and described.

2. The combination of the hopper-supporting stand G, provided with anannular rabbet to receive the. hopper and having its inner surface below said rabbet cut away, as at d, and mounted in a fixed inclined position, the circular hopper H, having a series of radial slots h 71. cut through its bottom, the inclined raceway-bar I), attached at one end to the stand G and provided with the T- shaped raceway-groove b, and a system of gearing connecting the axis of said hopper with the plunger-operating lever and constructed and arranged to impart to said hopper an intermittent step-by-step rotation about its axis, substantially as described.

3. The combination of a circular hopper provided with a series of radial slots in its bottom extending to its outer periphery and mounted so as to be revoluble in an inclined plane, an operating-shaft, suitable gearing connecting said operating-shaft and hopper, a disk or wheel firmly secured on said operating-shaft, a crank or arm loosely mounted on said operating-shaft and connected at its free end to the operating-lever, a washer of leather or other suitable frictional material interposed between said disk or wheel and crank or arm, a spring constructed and arranged to press said crank or arm into contact with said frictional washer, suitable means for adjusting the tension of said spring, a series of ratchet-teeth corresponding in number to the number of the radial slots in said hopper, and a spring-stop to engage with said teeth and prevent rotation of the hopper in the wrong-direction.

4. In a rivet-setting machine, the combination of the frame or goose-neck A, a fixed anvil, a vertically-reciprocating setting plunger and tool, a rivet-receiving pocket made in two parts, each provided with a laterallyinclined inner surface at the rear of the rivetholding receptacle and supported by and pressed toward each other by springs which yield to allow said parts to separate, and connected to the setting-plunger by frictional contact, so as to be movable therewith during a portion of the movement of said plunger in either direction and remain in a state of restduring the remainder of the movement of said plunger, and an inclined chute or raceway mounted in a fixed positionand 5 having its lower end cut away to form a horizontal under side, and a slotted plate secured to said horizontal under surface and provided at its front end with an arched T bridging its slot and constructed and arranged to project over the rear portions of the pocket and in close proximity thereto when said pocket is in its raised position.

5. The rivet-receiving pocket, composed of the two spring-pressed jaws s 8', each hav- I ing formed in its inner face the half of a rivet-holding socket, and a laterally-inclined surface at the rear of said socket, the upper corners of said jaws between their rear ends and the rivet-receiving socket being rounded, as shown and described.

6. The combination, with the reciprocating setting-plunger of a rivet-setting machine, of the block L, mounted on said plunger and provided with the slot q, the stop-screws q, set in said plunger and projecting into said slot, the pocket-jaws s .9, connected to said block L by.the springs s s, the frictional shoe or washer 1', bearing upon said plunger, the spring 7, for pressing said shoe or washer against said plunger, and the set-screw 1- for regulating the tension of said spring.

' In testimony whereof we have signed our names to this specification, in the presence of two subscribing witnesses, on this 26th day of June, A. D. 1890.

MELLEN N. BRAY. EVERETT M. POPE. ALBERT H. TABER.

Witnesses:

N. C. LOMBARD, WALTER E. LOMBARD. 

